Aptitude - Percentage - Discussion
Discussion Forum : Percentage - General Questions (Q.No. 7)
7.
In a certain school, 20% of students are below 8 years of age. The number of students above 8 years of age is 
of the number of students of 8 years of age which is 48. What is the total number of students in the school?
Answer: Option
Explanation:
Let the number of students be x. Then,
Number of students above 8 years of age = (100 - 20)% of x = 80% of x.
 80% of x = 48 + |
2 | of 48 |
| 3 |
 |
80 | x = 80 |
| 100 |
x = 100.
Video Explanation: https://youtu.be/yPfocU6DA2M
Discussion:
135 comments Page 10 of 14.
Bisikesan behera said:
8 years ago
80%of x=48+2/3*48.
80/100=48+32,
4/5 x=80,
X=400/4=100.
80/100=48+32,
4/5 x=80,
X=400/4=100.
Pushpi rai said:
9 years ago
Thanks @Vinod Anand.
I understand your explanation.
I understand your explanation.
Mahi said:
7 years ago
Why 8 years of students = 2/3 of 48? Please explain.
Neeraj said:
9 years ago
Why we are doing 2/3*48? Please, anyone explain me.
Winny said:
1 decade ago
20% +48 + ?
68, therefore 2/3* 48
=32
add
32+48+20
68, therefore 2/3* 48
=32
add
32+48+20
Vasu said:
8 years ago
@Ramesh.
Your explanation is good and it is easy.
Your explanation is good and it is easy.
Pappa said:
8 months ago
20% + 48 = 68.
100 - 68 = 32.
20 + 32 + 48 = 100.
100 - 68 = 32.
20 + 32 + 48 = 100.
(23)
Soukhya G M said:
7 years ago
Thank you all for explaining this. I get it now.
Ayesha said:
1 decade ago
Ramesh method is very good I liked that.
Anil kumar said:
1 decade ago
Sravanreddy your explaination was good.
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